Ch 4: Modern Atomic Theory

Front

What does 'quantized' mean in the context of atomic theory?

Back

It means that only certain values or positions are allowed, particularly for electrons in an atom.

Front

What is the frequency of a photon with a wavelength of 4.22x10^-7 nm?

Back

7.11x10^14 Hz.

Front

Define the term 'quantized' as it relates to electrons in an atom.

Back

The electron is limited to certain positions in the atom.

Front

What principle states that electrons fill lower energy orbitals before higher energy orbitals?

Back

Aufbau principle.

Front

How does wavelength relate to frequency and energy in waves?

Back

A wave with a large wavelength will have a low frequency and low energy.

Front

What is the formula to calculate the frequency of a photon?

Back

Frequency (ν) = Speed of light (c) / Wavelength (λ).

Front

What is the speed of light in a vacuum?

Back

Approximately 3.00 x 10^8 m/s.

Front

What is the relationship between energy and frequency of a photon?

Back

Energy (E) = Planck's constant (h) x Frequency (ν).

Front

What is Planck's constant and its value?

Back

Planck's constant (h) is 6.626 x 10^-34 J·s.

Front

What is the significance of the Aufbau principle in electron configuration?

Back

It dictates the order in which electrons occupy orbitals, filling lower energy levels first.